GPG in a PHP-Script

[J.Mueller, pro.vider.de GmbH]

Hello,

GnuPG 1.0.6
FreeBSD 4.2
Apache 1.3.11
PHP 4.0.6

When we try to clearsign a file from a command line, everything
works fine:

  % gpg --clearsign -ato test.sig test1.txt

But when we try to implement this as a system command into a
php-script, i.e.

  putenv("GNUPGHOME=/.gnupg");
  system("/path/to/gpg --clearsign -ato test.sig test.txt");

it's not working anymore and in the error_log it says

  /usr/libexec/ld-elf.so.1: Shared object "libiconv.so.2" not found

Does anybody has got that lib compiled for our environment which I
could just copy? What is that lib all about anyway and why does it
work with the command line?

Thanks you very much.
Juergen